Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Patents for H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (5,050)
09/1999
09/15/1999EP0942625A2 Method for fabricating diaphragm-edge integral molding for speakers
09/07/1999US5949898 Surround for a loudspeaker
08/1999
08/18/1999EP0935741A2 Surface micro-mechanic ultrasonic transducer
08/18/1999CN2334129Y Loud-speaker
08/10/1999US5937076 Magnetic drive apparatus and method for manufacturing coil that forms the apparatus
08/04/1999CN1044546C Loudspeaker and manufacturing method and apparatus
07/1999
07/15/1999WO1999035204A1 Synthetic chloroprene rubber adhesive composition and process for producing speaker by using the same
07/07/1999CN1222049A Dome speaker
06/1999
06/10/1999WO1999028626A1 Pump actuated by an electrodynamic transducer and method for making such a pump
05/1999
05/27/1999WO1999026261A1 Ferroelectric relaxor polymers
05/20/1999DE19850664A1 Dome loudspeaker for audio system
05/14/1999WO1999022882A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same
05/11/1999US5903068 Electroacoustic transducer
05/05/1999CN1215971A Method for continuous mfg. sound mixing paper of microphone and its product assembly
04/1999
04/29/1999WO1999008474A3 Cap and center pole apparatus and method of coupling
04/27/1999US5898786 Loudspeakers
04/27/1999US5896636 Method for providing a piezoelectric substrate and surface acoustic wave device with reduced bulk acoustic wave scattering
04/06/1999US5892185 Speaker unit and a method for manufacturing the same
04/06/1999CA2115075C Voice coil actuator ii
03/1999
03/30/1999US5888845 Method of making high sensitivity micro-machined pressure sensors and acoustic transducers
03/18/1999DE19839978A1 Sound measurement transducer for semiconducting electret microphone for portable telephone
03/09/1999US5879724 Molding method and apparatus using film as molding
03/02/1999US5878150 Damper for a loudspeaker and a method for producing the same
02/1999
02/24/1999EP0898076A1 Abrasion resistant plastic bonded to a diaphragm
02/18/1999WO1999008474A2 Cap and center pole apparatus and method of coupling
02/09/1999US5870482 Miniature silicon condenser microphone
02/03/1999CN1207011A Loudspeaker and preparation method
01/1999
01/27/1999CN1041886C Speaker component and speaker using the same
01/06/1999CN1041587C Production of vibrating object used in electric acoustic exchanger
12/1998
12/30/1998CN1041487C Loadspeaker structure
12/29/1998US5854846 Wafer fabricated electroacoustic transducer
12/23/1998WO1998058520A1 Loudspeakers
12/15/1998US5850462 Speaker component, speaker, and its manufacturing method
12/03/1998WO1998041055A3 Loudspeaker and method for producing the same
12/01/1998CA2060542C Electret capacitor microphone
11/1998
11/26/1998WO1998053640A1 Loudspeaker suspension device and fabricating method thereof
11/17/1998US5837176 Method of hot-press molding polyparaphenyleneterephthalamide film
11/11/1998CN2297029Y Composite rim injection diffuser for loadspeaker
11/04/1998CN1040606C Electracoustic transducer and method of fabricating the same
10/1998
10/08/1998DE19808994A1 Vehicle mounted ultrasonic obstruction sensor
10/07/1998CN1195454A Acoustic device
09/1998
09/29/1998CA2129946C Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
09/23/1998EP0866636A2 Voice coil and method for production thereof
09/17/1998WO1998041055A2 Loudspeaker and method for producing the same
09/02/1998CN1192117A Electroacoustic transducer
09/01/1998US5800663 Terminal connection method of a coil and terminal connection structure of a coil
08/1998
08/27/1998WO1998037388A1 Miniature silicon condenser microphone
08/26/1998EP0860095A1 Method for making a sound transducer integrated into an acoustic signal generating card
08/11/1998US5793002 Loudspeaker vibrating diaphragm and methods for its production
07/1998
07/14/1998US5781637 Method for fabricating a hearing aid faceplate and a faceplate produced thereby
07/14/1998CA2028171C Diaphragm and method for producing same
07/09/1998WO1998019140A3 Surface micro-mechanic ultrasonic transducer
07/07/1998US5777419 Surface acoustic wave device with minimized bulk scattering
07/07/1998US5776597 Made of impregnated cloth containing blends of aromatic polyesters and polyamides, to increase water and heat resistance
07/02/1998WO1998010252A3 Wafer fabricated electroacoustic transducer
06/1998
06/23/1998US5771302 Subwoofer--loudspeaker box
06/17/1998EP0847661A2 Acoustic device
05/1998
05/26/1998US5757090 Folded dielectric film element and method for maufacturing the same
05/12/1998US5751828 Magnetic circuit unit for loud-speaker and method of manufacturing the same
05/07/1998WO1998019140A2 Surface micro-mechanic ultrasonic transducer
05/07/1998DE19643893A1 Ultraschallwandler in Oberflächen-Mikromechanik Ultrasonic transducers in surface micromachining
05/06/1998EP0681513B1 Manufacturing method of an mechanically focusing ultrasonic transducer array
04/1998
04/28/1998US5744761 Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same
04/14/1998US5737824 Method of manufacturing electroacoustic transducer
03/1998
03/12/1998WO1998010252A2 Wafer fabricated electroacoustic transducer
03/12/1998CA2268053A1 Wafer fabricated electroacoustic transducer
02/1998
02/17/1998US5719946 Loudspeaker for higher audio frequencies and a manufacturing method thereof
01/1998
01/21/1998EP0753238A4 Method of manufacturing a loudspeaker spider
01/06/1998US5705108 Method for making edge for loudspeaker diaphragm
12/1997
12/30/1997US5701657 Method of manufacturing a repulsion magnetic circuit type loudspeaker
12/29/1997EP0814637A2 Method for producing a diaphragm for an electroacoustic transducer
12/23/1997US5701357 Loudspeaker structure with a diffuser
11/1997
11/25/1997US5690886 Method for molding a speaker grille
11/13/1997DE19718370A1 Method for producing sensitive pressure sensor or acoustic transducer
11/12/1997EP0806883A2 Loudspeaker
11/12/1997EP0806882A2 Sub-woofer loudspeaker enclosure
11/11/1997US5687247 Surround for a loudspeaker
10/1997
10/28/1997US5682436 Multipoint driving loudspeaker having repulsion magnetic-type driving unit
10/23/1997WO1997039464A1 Thin film electret microphone
10/16/1997DE19614579A1 Conical membrane for moving coil woofer type loudspeaker
10/14/1997US5675885 Method of winding a coil for an electroacoustic transducer
07/1997
07/22/1997US5650105 Expanding and curing a liquid plastic bead deposited into and along the circumference of a cone body in a die-enclosed mold
07/10/1997WO1997009842A3 Acoustic device
07/09/1997EP0783238A2 Method for the production and application of annular suspension edges of lound speaker diaphragms
06/1997
06/24/1997US5642333 Electroacoustic transducer and method of winding coil therein
06/10/1997US5637800 Ultrasonic transducer array and manufacturing method thereof
06/04/1997CN1151100A Terminal connection method of coil and terminal connetion structure of coil
05/1997
05/06/1997US5627904 Miniature loudspeaker clip structure
05/06/1997US5627321 Method of straining a diaphragm and a device therefor
05/01/1997WO1997016049A1 Method for making a sound transducer integrated into an acoustic signal generating card
04/1997
04/29/1997US5625700 Method of farbicating an electroacoustic transducer
04/22/1997US5623133 Speaker grille and molding method therefor
04/16/1997EP0768808A1 Lead frame material for electro acoustic transducer
04/10/1997DE19626813A1 Prodn. of edge bead for loudspeaker membrane
03/1997
03/19/1997EP0763961A2 Method for fabricating a hearing aid faceplate and a faceplate produced thereby
03/15/1997CA2185188A1 Method for fabricating a hearing aid faceplate and a faceplate produced thereby
03/13/1997WO1997009842A2 Acoustic device
02/1997
02/19/1997EP0758818A1 Surface-skimming bulk wave substrate, device including same and method
02/19/1997CN1143303A Loudspeaking damper and its preparing method
02/04/1997US5599563 Tool for molding a surround onto a loudspeaker cone
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